利用C# 实现dataGridView右键出现菜单功能

this.dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;  //选中整行可在属性中修改

datagridview.AutoGenerateColumns = false;//不让datagridview自动生成列，可在属性中修改

datagridview.AllowUserToAddRows = true;//禁止自动生成行可在属性中修改

 private void dataGridView1_CellMouseUp(object sender, DataGridViewCellMouseEventArgs e)
    {
      try
      {
        if (e.Button == MouseButtons.Right)
        {
          if (e.RowIndex >= 0)
          {
            dataGridView1.ClearSelection();
            dataGridView1.Rows[e.RowIndex].Selected = true;
            dataGridView1.CurrentCell = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
            contextMenuStrip1.Show(MousePosition.X, MousePosition.Y);
          }
        }
      }
      catch (Exception)
      {

        MessageBox.Show("请选择内容");
      }